问题
填空题
书写下列反应的离子方程式：
(1) NaOH+CuSO4_________________
(2) NaOH+CH3COOH________________
(3) CaCO3+HCl________________
(4) NaOH+NH4Cl________________
答案
(1)2OH-+Cu2+=Cu(OH)2↓
(2)OH-+CH3COOH=CH3COO-+H2O
(3)CaCO3+2H+=Ca2++H2O+CO2↑
(4)OH-+NH4+=NH3·H2O